Gear-shifting mechanism



Feb.27, 1923. 1 1,446,825 A. T. BROWN GEAR SHIFTING MECHANISM Filed Oct. 15, 1919 2 sheets-sheet 1 Fi L I i /7 5 INVENTOR. l

ATTORNEYS Feb. 27, 1923. 1,446,825

A. T. BROWN GEAR SHIFTING MECHANISM Filed Oct. 15, 1919 z sheets-sheet 2 v IN VEN TOR.

T R EYS Patented Feb. 27, 1923.

hair-an stares rarest errata.

ALEXANDER 'r.- BROWN, or SYRACUSE, NEW YORK, Ass'ronoR o THEBROWN-LIPE GEAR COMPANY, or sYRAcUsE,..nRw YORK, ALCORPORATION or new YoRK.

2 GEA sHIFTING CMECHAVNIISM.

Application filed 0'ct0be'r'15, 1919. Serial No. 330,826.

To all 'wkom'it may concern:

Be it known that .I, ALEXANDER TJBnown, a citizen of the United States, and a resident of Syracuse, inthe county of @nonda-ga'and State of New York, have invented a certain new and useful Gear-Shifting Mechanism, of which the following is a specification.-

This invention has for its object'the production of a gear shifting mechanism 'for change speed gears of motor vehicles which is particularly simple in constructionand highly effioient and durable in use.

It consists in the novel features and in the combinations and constructions hereinafter set forth and claimed.

In describing thisinvention,reference is had to the accompanying drawings inwhich like characters designate corresponding parts in all the views. I

'Figure 1 is a side elevation, partly section. of my gearing shifting mechanism, contiguous parts of the vehicle being also shown.

Figure 2 isxasecti'onal view on linex2-.2, Fig.1. 1 v

Figure 3 is a detail :view of the:pivoted supportfor the operatingzlever.

Figure 4'is an enlarged detail view of one of the motion transmitting-levers. 7

Figure 5ris a detail view'of-thelowerend of the shifting lever. I

This gear shifting-mechanismcomprises a plurality of motion transmitting members arranged side by side-0r in'a row, -a-pivoted support, and an operating lever 'having'selecting and shifting movements, the lever being pivoted'to the support and having an arm for selecting and shifting one of the motion transmitting members, the support having means associated therewith'for locking the unselected motion' transmitting members.

1, 2 and 3 are respectivelythe motion transmitting members which are hereillustrated as levers looselymounted upon a shaft 4 to rock thereon independently of each other, said levers extending downwardly frornthe shaft'4 andbeing connected at their lower'ends to rods which in turn are connected to the forks for shifting the gears of a ch'ange speed gear as will be understood with an upwardlyfacing notch or'slot'o'usually located directly below the "pivot of the lever 1, 2 or 3 and with a curved or arcshaped part 7 extending upwardly from the intermediatepart 5 and provided-with an opening 8 by means of which the leversl, 2 and 3 are mounted on theshaft 4, this open ing" 85 being also preferably located directly above the axis of the'lever 1, 201' 3 and the slot or recess 6 therein. part 71forms a passage 9in each lever for a purpose to be hereinafter described, into which passagethe notch or slot 6 opens.

' The shaft 4 is'suitably supported" by the 7 frame of the vehicle or by the transmission gear casing.

=10-is the support for the operating lever 11, thesupport 10 beingmounted on pivots 12 which are arranged With their axes extending above and crosswise of the axis of the shaft 40f the motion transmittinglevers 1, 2 and 3, the support being substantially oblong in plan and thepivots being located at'theends thereof. The support is formed with-a slot 13 extending lengthwise thereof, that is in the direction of the axial line of the iv-ots 12.

'Tie lever l1 'extends through the slot 13 and'is mounted on ashaft 14 carried by the support 10 and extending crosswise of the slot 13 and-the axis of the-pivots 12. The lever ll is formed with a-downwardly and forwardly extending arm 15 having a rear- The arc-shaped wzfiidly extending portion'16 projecting into therecess 9 of the lever-s1, 2 and 8, said portion 16 having adown-turned finger 17 for selectively'enteringthe slots 6 of the levers 1,2 or 3. p i

;l?he pivotal points-4, 8 and 14 are arranged in substantially the same-plane and alsothe recesseso are-located, in said plane. The pivots 12 are here shown as formed with cone 'point's' which enter complemental re cesses in the ends of the housing to which the support is pivoted.

As force isapplied to the handle *of the lever 1l'to rock the support 10 onits pivots 4 12, the finger 17 moves'out of the notch 6v of one lever 1, 2 or 3 into the notch '6 of another .leverand upon movement of the operatingmember about its axis 14, the lever j 1,2 or =3 engaged by the finger 17 is moved about its axis 4 and the motion thereof 'transferred'to a gear to be shifted.

The 'means'associated with the support 10 for locking the levers 1, 2 and 3 tasYhere shown includes arms 18 depending" from "opthe notch 6 of the central. lever 2 and the ends 19 of the arms 18 are located in the notches 6 of the levers 1 and 3.. Upon movement of the lever 11 forwardly; or rearwardly from shifting movement.

about its axis let-he middle. lever'2'will be shifted and the outside levers 1 and 8 held However, upon movement of the lever 11 laterally about the axis 12 of the support as for instancegto the right, Fig. 2, the arm 15 moves to the left carrying the finger 17 thereof outof the notch 6 of the lever Q'into the notch '6 of the lever 1 and the support 10 during this rocking movement carries the widened end 19 of the left'handf arm 18, Fig. 2 out of the recess 6 of the lever 1 and the end 19of the right handarm 18 into engagement with both levers 2 and 3. V

The support 10 is carried by a suitable housing 20. The operating lever is provided with a suitable lock which prevents movement of the operating lever in the direction to shift thegearinginto reverse unless said lock is operated, the lock consisting of a lever 22 pivoted between its ends to the operating lever 11 and coacting at .One end withthe shoulder 23 on the guide plate 24: and being connected at its other end to the lower end of the rod 25, the upper end of which is connected to alever;26 pivoted at 27 m the operating lever 11. Normally, the lock 22Vprevents unintentional shifting of the lever 11 to shift the gearing intoreverse. When it isdesired toreverse, the lever 26 must be first operated. Also a suit- 7 able brake lever 28 is shown as mountedon the slot,the operating lever having an arm forselectively engaging the motion transjmitting'mcmbers during the rocking'of the zsupport about its-axis and for shifting the selected member during the -movement of the operating lever about its own axisfand lockingmeans carried-.by the piyotedj sup- -ae ate;e ve therew he e wlmket er n elected motion transmitting member, substan tially as and for the purpose specified.

, 2. In a gear shifting mechanism, the combination of a plurality of motiontransmitting levers pivoted at like "ends; and an operating lever having selecting and shifting movements, the operating lever being pivoted above the upper ends of'themotion transmitting levers and having a clownwardly extending arm coacting with the motion transmittinglevers between their ends, substantially as and for the purpose set forth. a V

8. In a gear shifting mechanism, the combination of a plurality of motion transmittinglevers pivoted at like ends and hav ing means connected to their opposite ends for transferring the motion thereof, and also having between their ends vertical transverse notches, and a selecting and shifting lever pivoted above'the motion transmitting levers and having a downwardly extending arm formed-with an engaging portion arranged to enter the transverse notch of any one of the motionv transmitting levers and movable from one notch to the other during the selecting movement of the operating lever, substantiallyv as-and for the purpose described.

4.;In a gear shifting mechanism, the combination of a plurality of motion transmit ting members, a pivoted support, an operat hinatioinof a row of motion transmitting levers formed with transverse notches, a

otcd tofthe support, the axis of the operating leverextending atxgan angle to the aXis of the support, the operating lever having an arm provided with an. engaging portion located in the notch of one of the levers and movable from one notch to the other upon rocking movement; of the support to select one ofthe motion. transmitting levers to be shifted, the support having arms extending at opposite; ends of the row of levers and formed with means movable in the notches .of the unselected motion transmitting levers to lockthe-same, substantially as and for the purpose set forth,

-6.; :In "a gear shifft-ing mechanism, the combination of a; row of (power. transmitting levers -for med sanit vertlcal; itransverse pivoted su'pport,and an operating lever piv- V notches, a pivoted support, and an operating lever pivoted to thesupport, the axis oi the operating lever extending at an angle to the axis, of the support, and the notches of the motion transmitting levers being arranged concentric with the axis of the sup port, the operating lever having an arm provided with an engaging portion extending into the notch of one of the motion transmitting levers and movable from one notch to another upon rocking movement of the support to select one of the motion transmitting levers to be shifted, the support having arms extending on opposite sides of the row of levers and formed with means movable into the notches of the unselected motion transmitting levers to lock the same from movement, substantially as and for the purpose described.

7. In a gear shifting mechanism, the combination of a. row of motion transmitting levers pivoted at their lower ends and formed with vertical transverse notches between their ends, a support pivoted on an axis arranged above the row of levers and extending in a direction at a right angle to the axis of said levers, and an operating lever intovthe notch of one of the levers and mov able out of the notch of one lever into the notch of another lever to select the latter upon rocking movement of the support, and the support having arms extending on opposite ends of the row'of levers and having means extending into the transverse notches and movable into and out. of the notches during the movement of the operating lever and the support, to lock the unselected motion transmitting levers from shifting movement, substantially as and for the purpose speci- In testimony whereof, I have hereunto signed my name, at Syracuse, in the county of Onondaga, and State of New York, this 11th day of Oct, 1919.

ALEXANDER T. BROWN. 

